Progarm to find area and volume of a sphere in C

Program

#include <stdio.h>
int main()
{
    float r,v,a;
    printf("*************************************************");
    printf("\n*************************************************");
    printf("\n**   WAP to find area and volume of a sphere   **");
    printf("\n**           Created by Sheetal Garg           **");
    printf("\n**             Assistant Professor             **");
    printf("\n**             Phone No:9467863365             **");
    printf("\n*************************************************");
    printf("\n*************************************************");
    printf("\nenter radius of sphere");
    scanf("%f",&r);
    v= 1.33*3.14*r*r*r;
    a=4*3.14*r*r;
    printf("area is : %f\n",a);
    printf("volume is : %f\n",v);
    return 0;
}

Output

*************************************************
*************************************************
**   WAP to find area and volume of a sphere   **
**           Created by Sheetal Garg           **
**             Assistant Professor             **
**             Phone No:9467863365             **
*************************************************
*************************************************
enter radius of sphere
5
area is : 314.000000
volume is : 522.025024